package homework0306;

import java.io.File;
import java.io.FileFilter;

public class ListFilesDemo4 {
    public static void main(String[] args) {
        File dir=new File(".");
        if (dir.isDirectory()){
            File[] subs=dir.listFiles(file-> file.getName().endsWith(".txt"));
            for (File sub:subs){
                System.out.println(sub.getName());
            }

        }
    }
}
